CN112904372A - Auxiliary satellite navigation system and positioning method thereof - Google Patents
Auxiliary satellite navigation system and positioning method thereof Download PDFInfo
- Publication number
- CN112904372A CN112904372A CN202110434223.9A CN202110434223A CN112904372A CN 112904372 A CN112904372 A CN 112904372A CN 202110434223 A CN202110434223 A CN 202110434223A CN 112904372 A CN112904372 A CN 112904372A
- Authority
- CN
- China
- Prior art keywords
- navigation system
- user terminal
- base station
- positioning
- satellite navigation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000003993 interaction Effects 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000001228 spectrum Methods 0.000 claims description 6
- 238000010295 mobile communication Methods 0.000 abstract description 2
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
- G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an auxiliary satellite navigation system and a positioning method thereof, wherein the auxiliary satellite navigation system comprises a base station (1), a microprocessor (2) and a user terminal (3), the base station (1) and the user terminal (3) are used for receiving signals generated by a satellite (4), the base station (1) and the user terminal (3) carry out information interaction through a first wireless transmission mode, the base station (1) is also used for transmitting the signals to the microprocessor (2) through a second wireless transmission mode, and the microprocessor (2) and the user terminal (3) carry out information interaction through a third wireless transmission mode. The auxiliary satellite navigation system and the positioning method thereof provided by the invention can ensure that the satellite can achieve more accurate positioning accuracy and reduce the power consumption of the satellite without the assistance of a mobile communication network.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an auxiliary satellite navigation system and a positioning method thereof.
Background
Global Navigation Satellite Systems (GNSS) generally refer to all satellite navigation systems, and important performance indicators are accuracy, speed, and sensitivity. The method can provide all-weather time, three-dimensional coordinates and speed information for the user terminal at any place of a near earth space or an earth surface by using the observation quantities such as ephemeris, pseudo range and satellite transmission time of a group of satellites and the clock error of the user. In China, with the attention paid to economic and social development and national security, a Satellite Navigation System (BDS) which is an independently operated global Satellite Navigation System in China is independently researched and developed. The BDS is the third mature satellite navigation system following GPS, russian Glonass, in the united states.
The satellite-based navigation positioning accuracy alone is typically only 2-3 meters. In order to further improve the positioning accuracy, Real-time kinematic (RTK) is introduced into GNSS to form a GNSS-RTK technique. The user receiver performs real-time combined settlement on the received satellite signals and the reference station signals to obtain coordinates, the positioning accuracy can reach centimeter level, and common GNSS-RTK technologies comprise GPS-RTK, Glonass-RTK and the like. In order to improve positioning accuracy and speed and reduce the Time To First Fix (TTFF) required from the start of the positioning device, GNSS is often combined with some other assistance techniques, and the navigation system thus constructed is called Assisted-satellite navigation system (a-GNSS). The A-GNSS can utilize the mobile network to obtain the auxiliary information from the position server, including the almanac, the ephemeris, the frequency range, the standard time, the approximate position, etc. of the navigation satellite, and the satellite signal tracking is carried out according to the auxiliary information, thus the first positioning time can be greatly reduced. Although GNSS positioning alone is free, the current GNSS-RTK and a-GNSS technologies usually require network support to obtain information from the base station or location server, which incurs additional mobile network cost.
LoRa is a long-distance low-power wireless transmission mode based on spread spectrum technology adopted and popularized by Semtech corporation in America. The LoRa mainly operates in ISM frequency band, which mainly includes 433, 868, 2400MHz, etc. Compared with the existing cellular network, the LoRa coverage area is larger, the sensitivity is high, the LoRa can be more conveniently accessed into the existing infrastructure, and the power consumption is low. LoRa is in the thing networking application widely.
Disclosure of Invention
The invention aims to provide an auxiliary satellite navigation system and a positioning method thereof, so that a satellite can achieve more accurate positioning accuracy without the assistance of a mobile communication network and simultaneously reduce the power consumption of the satellite.
The technical scheme for solving the technical problems is as follows:
the invention provides an auxiliary satellite navigation system which comprises a base station, a microprocessor and a user terminal, wherein the base station and the user terminal are used for receiving signals generated by a satellite, the base station and the user terminal carry out information interaction through a first wireless transmission mode, the base station is also used for transmitting the signals to the microprocessor through a second wireless transmission mode, and the microprocessor and the user terminal carry out information interaction through a third wireless transmission mode.
Optionally, the microprocessor includes a base station signal receiver, a data processing module and an auxiliary signal server, the base station signal receiver is configured to receive a base station signal from the base station and transmit the base station signal to the data processing module, and the data processing module processes the base station signal and transmits the processed base station signal to the auxiliary signal server.
Optionally, the ue includes a positioning module, an application module, and a control module, the control module is configured to control the positioning module and the application module to switch between an operating state and an idle state, the positioning module is configured to receive the signal and generate information interaction with the application module and the base station simultaneously, and the application module is further configured to generate information interaction with the microprocessor.
Optionally, the first wireless transmission mode and/or the second wireless transmission mode and/or the third wireless transmission mode are long-distance low-power consumption wireless transmission modes based on spread spectrum technology.
Optionally, the positioning method comprises:
s1: starting the user terminal, and setting a detection period at the user terminal;
s2: judging whether navigation positioning is needed or not in the detection period, if so, entering a step S3, otherwise, entering a step S6;
s3: judging whether the auxiliary satellite navigation system is in cold start, if so, entering step S4, otherwise, entering step S5;
s4: controlling an auxiliary satellite navigation system to enter a first working mode, entering a second working mode after the accurate positioning precision reaches a preset threshold value, and ending the positioning process;
s5: controlling the auxiliary satellite navigation system to directly enter a second working mode, and ending the positioning process;
s6: and controlling the auxiliary satellite navigation system to be closed, and ending the positioning process.
Optionally, the first operating mode is an a-BDS-RTK mode.
Optionally, the a-BDS-RTK comprises, when the user terminal is initially booted:
s41: transmitting the current time information to the microprocessor through the third wireless transmission mode;
s42: and processing the current time information and the current corresponding satellite information through the microprocessor, and storing a processing result.
Optionally, the a-BDS-RTK comprises, without initial start-up of the user terminal:
s43: controlling the user terminal to send an information request signal to the microprocessor;
s44: the microprocessor receives the information request signal and then sends auxiliary information to the user terminal;
s45: receiving the assistance information and capturing a regional satellite through the user terminal;
s46: and searching and accurately positioning the current corresponding satellite according to the regional satellite.
Optionally, the second operating mode is a BDS-RTK mode.
Optionally, the BDS-RTK mode comprises:
and controlling the user terminal to receive the information of the base station and the satellite.
The invention has the following beneficial effects:
1. the first wireless transmission mode, the second wireless transmission mode and the third wireless transmission mode adopt a long-distance low-power consumption wireless transmission mode (namely, LoRa technology) based on a spread spectrum technology at the same time, so that the consumption cost of the whole system can be reduced;
2. when navigation is not needed, the navigation system is turned off, so that power consumption can be reduced, and cost is further saved;
3. the microprocessor is adopted for assisting navigation, so that the positioning precision and speed can be improved, and the Time To First Fix (TTFF) required from the start of the positioning equipment is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an assisted satellite navigation system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of information interaction of an assisted satellite navigation system according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a positioning method of an assisted satellite navigation system according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a first operation mode of a positioning method of an assisted satellite navigation system according to an embodiment of the present invention at initial start-up;
fig. 5 is a flowchart illustrating a first operation mode of a positioning method of an assisted satellite navigation system according to an embodiment of the invention when the first operation mode is not initially started.
Description of the reference numerals
1-a base station; 2-a microprocessor; 3-a user terminal; 4-satellite.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
In the present invention, the terms "first", "second", and the like are used for distinguishing one element from another without any explanation to the contrary, and have no sequence or importance. In the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The invention provides an auxiliary satellite navigation system which comprises a base station 1, a microprocessor 2 and a user terminal 3, wherein the base station 1 and the user terminal 3 are used for receiving signals generated by a satellite 4, the base station 1 and the user terminal 3 carry out information interaction through a first wireless transmission mode, the base station 1 is also used for transmitting the signals to the microprocessor 2 through a second wireless transmission mode, and the microprocessor 2 and the user terminal 3 carry out information interaction through a third wireless transmission mode.
The invention has the following beneficial effects:
1. the first wireless transmission mode, the second wireless transmission mode and the third wireless transmission mode adopt a long-distance low-power consumption wireless transmission mode (namely, LoRa technology) based on a spread spectrum technology at the same time, so that the consumption cost of the whole system can be reduced;
2. when navigation is not needed, the navigation system is turned off, so that power consumption can be reduced, and cost is further saved;
3. the microprocessor 2 is adopted for assisting navigation, so that the positioning precision and speed can be improved, and the Time To First Fix (TTFF) required from the start of the positioning equipment is reduced.
Optionally, the first wireless transmission mode and/or the second wireless transmission mode and/or the third wireless transmission mode are long-distance low-power wireless transmission modes based on spread spectrum technology (i.e. LoRa, the same below). Here, the first wireless transmission mode, the second wireless transmission mode, and the third wireless transmission mode that can reduce the system consumption cost are not specifically limited in the present invention, and those skilled in the art may design the first wireless transmission mode, the second wireless transmission mode, and the third wireless transmission mode in combination with the present solution so as to reduce the system consumption cost without using a mobile wireless network.
Optionally, the microprocessor 2 includes a base station 1 signal receiver, a data processing module and an auxiliary signal server, the base station 1 signal receiver is configured to receive a base station signal from the base station 1 and transmit the signal to the data processing module, and the data processing module processes the base station signal and transmits the processed base station signal to the auxiliary signal server.
Optionally, the ue 3 includes a positioning module, an application module and a control module, the control module is configured to control the positioning module and the application module to switch between an operating state and an idle state, the positioning module is configured to receive the signal and generate information interaction with the application module and the base station 1 at the same time, and the application module is further configured to generate information interaction with the microprocessor 2. Here, the localization module is a BDS localization module.
The base station 1 transmits information by LoRa periodically. The auxiliary satellite navigation system mainly introduces the microprocessor 2 for auxiliary navigation positioning. The information interaction of each module when the auxiliary satellite navigation system works is shown in figure 2. The base station 1 always receives information from the navigation satellite 4 and transmits the information to the base station 1 signal receiver in the microprocessor 2, then the data processing module processes the information and converts the information into information usable by the application program module, and the information and the time information from the application program module are stored in the auxiliary signal server.
Due to the different functions of the control module of the user terminal 3, three operation modes can be divided, which are respectively called as: BDS mode, BDS-RTK mode, A-BDS-RTK mode.
BDS mode: the control module controls the BDS positioning module to directly receive the information from the navigation satellite 4, and does not receive the auxiliary information transmitted by the application program module and the information of the base station 1, thereby completing independent navigation. The microprocessor 2 and the base station 1 are not involved in navigation at this time.
BDS-RTK mode: the control module controls the BDS positioning module to receive information from the navigation satellite 4 and the base station 1, but not receive auxiliary information transmitted by the application program module, and the navigation task is completed. The microprocessor 2 is not involved in the navigation at this time.
A-BDS-RTK mode: to reduce power consumption, the control module turns off the navigation system when it is not needed and turns on the navigation system again when it is needed, which involves the possibility of multiple cold starts of the navigation system in a short time. In this case, the position information, time information, and the like of the user terminal 3 and the satellite 4 do not vary much, and the microprocessor 2 performs navigation to improve the navigation accuracy and speed and reduce TTFF. Firstly, before the control module closes the navigation system function of the user terminal 3, the application program module transmits the time information to the auxiliary signal server in the microprocessor 2 through LoRa, and the auxiliary signal server stores the time signal and the satellite 4 information (the satellite 4 signal is transmitted to the microprocessor 2 by the base station 1) corresponding to the time signal as unified auxiliary information for later use; when the control module closes the navigation system of the user terminal 3 and then performs cold start of the navigation system again, the control module controls the application program module to send a request signal to the auxiliary signal server, the auxiliary signal server sends auxiliary information after receiving the request signal, and then the application program module receives the auxiliary information and transmits the auxiliary information to the BDS positioning module. The BDS module quickly captures visible satellite 4 signals according to the auxiliary information and then accurately tracks the satellite 4 signals to achieve the purpose of quick and accurate positioning.
Finally, the work flow of the user terminal 3 is analyzed, and in order to ensure the navigation positioning precision, the BDS mode is not considered. Referring to fig. 3, in order to ensure low power consumption, the control module of the user terminal 3 evaluates whether the system needs to navigate within a detection period. If the navigation is not needed, the application program module sends the time signal to the auxiliary signal server, the microprocessor 2 stores the auxiliary information for later use, and the control module closes the navigation system at the user terminal 3. If the navigation is needed, judging whether the navigation is cold start or not, if the navigation is cold start, starting a navigation system at the user terminal 3 by the control module, cold starting the navigation system and working in an A-BDS-RTK mode until the user terminal 3 can accurately track the satellite 4 signal, and switching the navigation system to the BDS-RTK mode; if not cold start, indicating that the navigation system has been operating in the BDS-RTK mode for the last detection cycle, the navigation system remains in the BDS-RTK mode. And repeating the above operations until the next detection period comes.
In summary, the invention provides a low-power-consumption auxiliary satellite navigation system based on RTK and LoRa technologies. In order to avoid using a mobile network and reduce expenses, an LoRa technology is introduced for information interaction. To reduce power consumption, the navigation system is turned off when navigation is not needed. In order to improve the positioning speed and precision and reduce TTFF, the microprocessor 2 is adopted to assist navigation positioning. In order to improve the positioning accuracy, RTK technology is introduced.
Alternatively, referring to fig. 3, the positioning method includes:
s1: starting the user terminal 3, and setting a detection period in the user terminal 3;
s2: and judging whether navigation positioning is needed or not in the detection period, if so, entering step S3, and otherwise, entering step S6.
Here, in the detection period, different settings may be made as to whether navigation is required or not in combination with the navigation system carrying different products, taking the carrying of the vehicle as an example, when the vehicle is temporarily parked for a period of time, such as what people are at the roadside, the possible time is long, when the period of time exceeds a long period of time, it is determined that navigation is not required, and at this moment, navigation is turned off. Of course, the criterion for determining whether navigation is needed is not limited to the determination by time, and those skilled in the art can set the criterion by combining the present solution and the actual situation.
S3: and judging whether the auxiliary satellite navigation system is in cold start, if so, entering the step S4, and otherwise, entering the step S5.
In addition, it should be noted that the cold start refers to a start process of starting the GPS in an unfamiliar environment until the GPS contacts the surrounding satellites 4 and the coordinates are calculated. The startup belongs to cold startup under the following conditions: 1. when the product is used for the first time; 2. when ephemeris information is lost due to battery drain; 3. and moving the receiver over a distance of more than 1000 kilometers in the power-off state. That is to say, the cold start is a forced start by a hardware manner, because the internal positioning information is already cleared away from the last operation of the GPS, the GPS receiver loses the parameters of the satellite 4, or the difference between the existing parameters and the actually received parameters of the satellite 4 is too much, so that the navigator cannot work, and the coordinate data provided by the satellite 4 must be newly obtained, so that the vehicle starts a hundred percent cold start of navigation from the garage, which is also the reason for the long star search time from the garage.
Of course, in order to compare with the current time signal acquired after the navigation is turned on again, if the difference is too large, the cold start is performed, and if the difference is not large, the cold start is not performed. Fast positioning can be facilitated.
S4: and controlling the auxiliary satellite navigation system to enter a first working mode, and entering a second working mode after the accurate positioning precision reaches a preset threshold value.
Here, optionally, the first operating mode is an a-BDS-RTK mode.
Alternatively, referring to fig. 4, when the user terminal 3 is initially started, the a-BDS-RTK includes:
s41: transmitting the current time information to the microprocessor through the third wireless transmission mode;
s42: and processing the current time information and the current corresponding satellite 4 information through the microprocessor, and storing a processing result.
Alternatively, referring to fig. 5, the a-BDS-RTK includes, when the user terminal 3 is not initially booted:
s43: controlling the user terminal 3 to send an information request signal to the microprocessor 2;
s44: the microprocessor 2 receives the information request signal and then sends auxiliary information to the user terminal 3;
s45: receiving the assistance information and capturing regional satellites through the user terminal 3;
s46: and searching and accurately positioning the current corresponding satellite 4 according to the regional satellite.
In addition, the positioning condition is judged by the preset positioning threshold value and the actual positioning value, and in general, the smaller the difference value between the preset positioning threshold value and the actual positioning value is, the higher the positioning precision is, and the more accurate the positioning is.
S5: controlling the auxiliary satellite navigation system to directly enter a second working mode;
here, optionally, the second operating mode is a BDS-RTK mode, and the BDS-RTK mode includes:
controlling the user terminal 3 to receive the information of the base station 1 and the satellite 4.
S6: and controlling the auxiliary satellite navigation system to be closed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An assisted satellite navigation system, comprising a base station (1), a microprocessor (2) and a user terminal (3), wherein the base station (1) and the user terminal (3) are configured to receive signals generated by a satellite (4), the base station (1) and the user terminal (3) perform information interaction through a first wireless transmission mode, the base station (1) is further configured to transmit the signals to the microprocessor (2) through a second wireless transmission mode, and the microprocessor (2) and the user terminal (3) perform information interaction through a third wireless transmission mode.
2. The assisted satellite navigation system according to claim 1, wherein the microprocessor (2) comprises a base station signal receiver for receiving a base station signal from the base station (1) and transmitting the base station signal to the data processing module, a data processing module for processing the base station signal and transmitting the processed base station signal to the assisted signal server, and an assisted signal server.
3. The assisted satellite navigation system according to claim 1, characterized in that the user terminal (3) comprises a positioning module, an application module and a control module, the control module is configured to control the positioning module and the application module to switch between an active state and an idle state, the positioning module is configured to receive the signal and to generate information interaction with the application module and the base station (1) simultaneously, and the application module is further configured to generate information interaction with the microprocessor (2).
4. An assisted satellite navigation system according to any of claims 1 to 3, wherein the first and/or second and/or third wireless transmission modes are long range low power wireless transmission modes based on spread spectrum techniques.
5. A positioning method based on the assisted satellite navigation system of any one of claims 1-4, wherein the positioning method comprises:
s1: starting the user terminal (3), and setting a detection period in the user terminal (3);
s2: judging whether navigation positioning is needed or not in the detection period, if so, entering a step S3, otherwise, entering a step S6;
s3: judging whether the auxiliary satellite navigation system is in cold start, if so, entering step S4, otherwise, entering step S5;
s4: controlling an auxiliary satellite navigation system to enter a first working mode, entering a second working mode after the accurate positioning precision reaches a preset threshold value, and ending the positioning process;
s5: controlling the auxiliary satellite navigation system to directly enter a second working mode, and ending the positioning process;
s6: and controlling the auxiliary satellite navigation system to be closed, and ending the positioning process.
6. The positioning method of the assisted satellite navigation system of claim 5, wherein the first operating mode is an A-BDS-RTK mode.
7. The positioning method of an assisted satellite navigation system according to claim 6, characterized in that the A-BDS-RTK mode comprises, at the initial start-up of the user terminal (3):
s41: -transmitting current time information to the microprocessor (2) via the third wireless transmission mode;
s42: and processing the current time information and the information of the current corresponding satellite (4) through the microprocessor (2), and storing the processing result.
8. The positioning method of an assisted satellite navigation system according to claim 6, characterized in that, in the absence of initial start-up of the user terminal (3), the A-BDS-RTK mode comprises:
s43: controlling the user terminal (3) to send an information request signal to the microprocessor (2);
s44: the microprocessor (2) receives the information request signal and then sends auxiliary information to the user terminal (3);
s45: -receiving said assistance information and acquiring regional satellites by said user terminal (3);
s46: and searching and accurately positioning the current corresponding satellite (4) according to the regional satellite.
9. The positioning method of the assisted satellite navigation system of claim 5, wherein the second operating mode is a BDS-RTK mode.
10. The positioning method of the assisted satellite navigation system of claim 9, wherein the BDS-RTK mode comprises:
controlling the user terminal (3) to receive information of the base station (1) and the satellite (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434223.9A CN112904372B (en) | 2021-04-22 | 2021-04-22 | Auxiliary satellite navigation system and positioning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434223.9A CN112904372B (en) | 2021-04-22 | 2021-04-22 | Auxiliary satellite navigation system and positioning method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112904372A true CN112904372A (en) | 2021-06-04 |
| CN112904372B CN112904372B (en) | 2024-01-12 |
Family
ID=76109034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110434223.9A Active CN112904372B (en) | 2021-04-22 | 2021-04-22 | Auxiliary satellite navigation system and positioning method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112904372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338911A (en) * | 2021-12-14 | 2022-04-12 | 青岛海信移动通信技术股份有限公司 | Positioning method suitable for terminal equipment and terminal equipment |
Citations (59)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338745A (en) * | 1971-09-10 | 1973-11-28 | Bendix Corp | Fuel control system for internal combustion engines |
| JP2004028593A (en) * | 2002-06-21 | 2004-01-29 | Mitsubishi Electric Corp | Aeronautical station device and mobile terminal device |
| CN1484038A (en) * | 2002-08-07 | 2004-03-24 | 伊莱德公司 | Client-aided Doppler estimation |
| WO2005002089A1 (en) * | 2003-06-27 | 2005-01-06 | Thinkware Systems Corporation | A method for providing navigation service by using location of a mobile terminal and a system thereof |
| CN1755391A (en) * | 2004-09-29 | 2006-04-05 | 佛山市顺德区瑞图万方科技有限公司 | Multifunctional intelligent vehicle-carrying navigation monitoring system |
| CN1897748A (en) * | 2006-06-27 | 2007-01-17 | 重庆邮电大学 | Method for positioning RTK based on TD-SCDMA |
| CN1928588A (en) * | 2006-10-17 | 2007-03-14 | 孟详粤 | Positioning method for GPS receiving terminal of AGPS auxiliary satellite positioning system |
| US7215967B1 (en) * | 1998-12-22 | 2007-05-08 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for fast cold start of a GPS receiver in a telecommunications environment |
| CN101155419A (en) * | 2007-07-02 | 2008-04-02 | 重庆邮电大学 | TD-SCDMA mobile phone terminal and location processing method supporting AGPS |
| CN101198883A (en) * | 2005-06-13 | 2008-06-11 | 诺基亚公司 | Auxiliary satellite positioning for support |
| CN101206258A (en) * | 2007-12-20 | 2008-06-25 | 上海伽利略导航有限公司 | High sensitivity auxiliary positioning system and data processing method thereof |
| CN101206254A (en) * | 2007-12-20 | 2008-06-25 | 上海伽利略导航有限公司 | GPS receiver locating in doors and auxiliary satellite navigation positioning system |
| CN101340638A (en) * | 2008-08-12 | 2009-01-07 | 青岛海信移动通信技术股份有限公司 | Alarm control method of mobile communication apparatus and mobile communication apparatus |
| CN101360146A (en) * | 2008-09-12 | 2009-02-04 | 青岛海信移动通信技术股份有限公司 | Positioning method and system of mobile communication apparatus |
| CN101424736A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院微电子研究所 | Receiver rapidly starting-up and positioning method in global positioning system |
| US20090115657A1 (en) * | 2007-11-06 | 2009-05-07 | Ann-Tzung Cheng | Gnss receiver system and related method thereof |
| CN101493513A (en) * | 2008-01-22 | 2009-07-29 | 深圳市莱科电子技术有限公司 | Rapid positioning system based on local process of satellite information |
| CN101566678A (en) * | 2009-05-27 | 2009-10-28 | 刘建 | Method and system for updating ephemeris |
| CN101716075A (en) * | 2009-12-11 | 2010-06-02 | 无锡市吉天通信科技有限公司 | Twelve-leading dynamic electrocardiograph having bi-locating function |
| KR20100062678A (en) * | 2008-12-02 | 2010-06-10 | 주식회사 대우일렉트로닉스 | A system of decreasing cold start time of gps and a method thereof |
| CN101938287A (en) * | 2010-07-16 | 2011-01-05 | 天津七一二通信广播有限公司 | Handheld satellite communication terminal and method for guiding user to align antenna with satellite by using same |
| CN101968544A (en) * | 2010-08-05 | 2011-02-09 | 东莞市泰斗微电子科技有限公司 | Quick cold starting method for GPS and big dipper second-generation dual mode satellite navigation receiver |
| US20110112765A1 (en) * | 2008-12-29 | 2011-05-12 | Ying-Lin Lai | Navigation device & method |
| CN102150058A (en) * | 2008-09-15 | 2011-08-10 | 索尼爱立信移动通讯有限公司 | System and method of transferring location assistance information between electronic devices |
| CN102361510A (en) * | 2011-10-17 | 2012-02-22 | 中兴通讯股份有限公司 | Mobile broadband device and auxiliary positioning method thereof |
| US20120112960A1 (en) * | 2010-11-08 | 2012-05-10 | Electronics And Telecommunications Research Institute | Access point, mobile terminal, global navigation satellite system using the access point, and method of providing position information using the access point |
| CN102654579A (en) * | 2012-05-04 | 2012-09-05 | 东莞市泰斗微电子科技有限公司 | Quick locating method and system of double-mould or multi-mould locating terminal based on auxiliary information |
| CN102788982A (en) * | 2012-08-14 | 2012-11-21 | 东莞市泰斗微电子科技有限公司 | Assisted positioning-monitoring system |
| CN102788987A (en) * | 2012-08-14 | 2012-11-21 | 东莞市泰斗微电子科技有限公司 | A-GNSS (Assisted Global Navigation Satellite System) assisted positioning system |
| CN102866627A (en) * | 2012-09-26 | 2013-01-09 | 桂林电子科技大学 | Beidou seamless high-precision time service implementation method and system |
| CN103176197A (en) * | 2013-02-28 | 2013-06-26 | 江苏天源电子有限公司 | Auxiliary Beidou satellite positioning system and positioning tracking terminal based on same |
| CN103327450A (en) * | 2013-06-13 | 2013-09-25 | 华南理工大学 | Intensive-calculating GPS receiver based on mobile communication network and positioning method of same |
| CN103344976A (en) * | 2013-07-05 | 2013-10-09 | 东莞市泰斗微电子科技有限公司 | Auxiliary satellite navigation and positioning method and corresponding positioning terminal |
| CN203287531U (en) * | 2013-02-28 | 2013-11-13 | 江苏天源电子有限公司 | Positioning and tracking terminal based on assistant Beidou satellite positioning system |
| CN103616701A (en) * | 2013-10-25 | 2014-03-05 | 湘潭力博电气技术有限公司 | A micro remote wild animal tracker and a control method thereof |
| CN103617475A (en) * | 2013-10-25 | 2014-03-05 | 湘潭力博电气技术有限公司 | A system and a method of energy efficiency management used for a micro remote tracker |
| CN103675879A (en) * | 2012-09-21 | 2014-03-26 | 东莞市泰斗微电子科技有限公司 | Positioning monitoring system and method |
| CN104335069A (en) * | 2012-05-23 | 2015-02-04 | 马维尔国际贸易有限公司 | Method and apparatus for determining position in a global navigation satellite system |
| CN104570022A (en) * | 2014-12-26 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | DSP-based multi-system compatible GNSS receiver and receiving system thereof |
| CN104796982A (en) * | 2015-03-19 | 2015-07-22 | 天津七一二通信广播有限公司 | Method for increasing positioning precision of PDT terminal |
| CN205643716U (en) * | 2016-05-14 | 2016-10-12 | 四川中卫北斗科技有限公司 | Navigation signal reception machine |
| CN106199666A (en) * | 2016-09-20 | 2016-12-07 | 北京航空航天大学 | A kind of positioning and tracing method forwarding GNSS signal based on terminal |
| CN106556853A (en) * | 2015-09-28 | 2017-04-05 | 大唐半导体设计有限公司 | A kind of multimode Differential positioning method and system |
| CN106707317A (en) * | 2016-12-01 | 2017-05-24 | 上海埃威航空电子有限公司 | Regional position differential positioning method and system |
| CN107329153A (en) * | 2017-05-14 | 2017-11-07 | 上海美迪索科电子科技有限公司 | A kind of multimodality fusion positioner based on LoRa |
| CN206930782U (en) * | 2017-08-01 | 2018-01-26 | 云南电网有限责任公司瑞丽供电局 | A kind of Big Dipper positioning longitude and latitude optimization system based on CORS base stations |
| CN108008432A (en) * | 2018-01-05 | 2018-05-08 | 深圳市沃特沃德股份有限公司 | satellite positioning method, device and intelligent watch |
| CN108089216A (en) * | 2016-11-21 | 2018-05-29 | 千寻位置网络有限公司 | Assisted location method and system |
| CN108885268A (en) * | 2016-04-14 | 2018-11-23 | 高通股份有限公司 | Method for enhancing independent Global Navigation Satellite System (GNSS) performance |
| CN109959948A (en) * | 2017-12-22 | 2019-07-02 | 中兴通讯股份有限公司 | Acquisition methods, terminal, storage medium, the electronic device of location information |
| CN110677828A (en) * | 2019-09-30 | 2020-01-10 | 东北大学 | Wireless communication networking and positioning method special for construction site of constructional engineering |
| CN110702118A (en) * | 2019-10-25 | 2020-01-17 | 桂林电子科技大学 | AGV-based outdoor positioning navigation system and positioning method thereof |
| CN111123329A (en) * | 2019-12-31 | 2020-05-08 | 南京泰通科技股份有限公司 | Communication auxiliary positioning device and positioning method based on Beidou satellite positioning system |
| CN111175798A (en) * | 2019-12-31 | 2020-05-19 | 南京泰通科技股份有限公司 | Terminal communication auxiliary positioning logic control method based on Beidou satellite positioning system |
| CN111475209A (en) * | 2020-03-16 | 2020-07-31 | 西安广和通无线软件有限公司 | Data processing method, data processing device, computer equipment and storage medium |
| CN111522045A (en) * | 2019-02-02 | 2020-08-11 | 中兴通讯股份有限公司 | GPS module cold start method and device of terminal, terminal and storage medium |
| CN112366337A (en) * | 2020-12-04 | 2021-02-12 | 上海燃锐新能源汽车技术有限公司 | Starting method and device of fuel cell engine system in low-temperature environment |
| CN112491461A (en) * | 2020-11-24 | 2021-03-12 | 重庆两江卫星移动通信有限公司 | CORS network data transmission system and method for low earth orbit satellite communication |
| CN112612038A (en) * | 2020-12-31 | 2021-04-06 | 杭州飞舸科技有限公司 | Low-power consumption GPS positioning method and system |
-
2021
- 2021-04-22 CN CN202110434223.9A patent/CN112904372B/en active Active
Patent Citations (60)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338745A (en) * | 1971-09-10 | 1973-11-28 | Bendix Corp | Fuel control system for internal combustion engines |
| US7215967B1 (en) * | 1998-12-22 | 2007-05-08 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for fast cold start of a GPS receiver in a telecommunications environment |
| JP2004028593A (en) * | 2002-06-21 | 2004-01-29 | Mitsubishi Electric Corp | Aeronautical station device and mobile terminal device |
| CN1484038A (en) * | 2002-08-07 | 2004-03-24 | 伊莱德公司 | Client-aided Doppler estimation |
| WO2005002089A1 (en) * | 2003-06-27 | 2005-01-06 | Thinkware Systems Corporation | A method for providing navigation service by using location of a mobile terminal and a system thereof |
| CN1755391A (en) * | 2004-09-29 | 2006-04-05 | 佛山市顺德区瑞图万方科技有限公司 | Multifunctional intelligent vehicle-carrying navigation monitoring system |
| CN101198883A (en) * | 2005-06-13 | 2008-06-11 | 诺基亚公司 | Auxiliary satellite positioning for support |
| CN1897748A (en) * | 2006-06-27 | 2007-01-17 | 重庆邮电大学 | Method for positioning RTK based on TD-SCDMA |
| CN1928588A (en) * | 2006-10-17 | 2007-03-14 | 孟详粤 | Positioning method for GPS receiving terminal of AGPS auxiliary satellite positioning system |
| CN101155419A (en) * | 2007-07-02 | 2008-04-02 | 重庆邮电大学 | TD-SCDMA mobile phone terminal and location processing method supporting AGPS |
| CN101424736A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院微电子研究所 | Receiver rapidly starting-up and positioning method in global positioning system |
| US20090115657A1 (en) * | 2007-11-06 | 2009-05-07 | Ann-Tzung Cheng | Gnss receiver system and related method thereof |
| CN101430375A (en) * | 2007-11-06 | 2009-05-13 | 联发科技股份有限公司 | Gnss receiver system and related method thereof |
| CN101206258A (en) * | 2007-12-20 | 2008-06-25 | 上海伽利略导航有限公司 | High sensitivity auxiliary positioning system and data processing method thereof |
| CN101206254A (en) * | 2007-12-20 | 2008-06-25 | 上海伽利略导航有限公司 | GPS receiver locating in doors and auxiliary satellite navigation positioning system |
| CN101493513A (en) * | 2008-01-22 | 2009-07-29 | 深圳市莱科电子技术有限公司 | Rapid positioning system based on local process of satellite information |
| CN101340638A (en) * | 2008-08-12 | 2009-01-07 | 青岛海信移动通信技术股份有限公司 | Alarm control method of mobile communication apparatus and mobile communication apparatus |
| CN101360146A (en) * | 2008-09-12 | 2009-02-04 | 青岛海信移动通信技术股份有限公司 | Positioning method and system of mobile communication apparatus |
| CN102150058A (en) * | 2008-09-15 | 2011-08-10 | 索尼爱立信移动通讯有限公司 | System and method of transferring location assistance information between electronic devices |
| KR20100062678A (en) * | 2008-12-02 | 2010-06-10 | 주식회사 대우일렉트로닉스 | A system of decreasing cold start time of gps and a method thereof |
| US20110112765A1 (en) * | 2008-12-29 | 2011-05-12 | Ying-Lin Lai | Navigation device & method |
| CN101566678A (en) * | 2009-05-27 | 2009-10-28 | 刘建 | Method and system for updating ephemeris |
| CN101716075A (en) * | 2009-12-11 | 2010-06-02 | 无锡市吉天通信科技有限公司 | Twelve-leading dynamic electrocardiograph having bi-locating function |
| CN101938287A (en) * | 2010-07-16 | 2011-01-05 | 天津七一二通信广播有限公司 | Handheld satellite communication terminal and method for guiding user to align antenna with satellite by using same |
| CN101968544A (en) * | 2010-08-05 | 2011-02-09 | 东莞市泰斗微电子科技有限公司 | Quick cold starting method for GPS and big dipper second-generation dual mode satellite navigation receiver |
| US20120112960A1 (en) * | 2010-11-08 | 2012-05-10 | Electronics And Telecommunications Research Institute | Access point, mobile terminal, global navigation satellite system using the access point, and method of providing position information using the access point |
| CN102361510A (en) * | 2011-10-17 | 2012-02-22 | 中兴通讯股份有限公司 | Mobile broadband device and auxiliary positioning method thereof |
| CN102654579A (en) * | 2012-05-04 | 2012-09-05 | 东莞市泰斗微电子科技有限公司 | Quick locating method and system of double-mould or multi-mould locating terminal based on auxiliary information |
| CN104335069A (en) * | 2012-05-23 | 2015-02-04 | 马维尔国际贸易有限公司 | Method and apparatus for determining position in a global navigation satellite system |
| CN102788982A (en) * | 2012-08-14 | 2012-11-21 | 东莞市泰斗微电子科技有限公司 | Assisted positioning-monitoring system |
| CN102788987A (en) * | 2012-08-14 | 2012-11-21 | 东莞市泰斗微电子科技有限公司 | A-GNSS (Assisted Global Navigation Satellite System) assisted positioning system |
| CN103675879A (en) * | 2012-09-21 | 2014-03-26 | 东莞市泰斗微电子科技有限公司 | Positioning monitoring system and method |
| CN102866627A (en) * | 2012-09-26 | 2013-01-09 | 桂林电子科技大学 | Beidou seamless high-precision time service implementation method and system |
| CN203287531U (en) * | 2013-02-28 | 2013-11-13 | 江苏天源电子有限公司 | Positioning and tracking terminal based on assistant Beidou satellite positioning system |
| CN103176197A (en) * | 2013-02-28 | 2013-06-26 | 江苏天源电子有限公司 | Auxiliary Beidou satellite positioning system and positioning tracking terminal based on same |
| CN103327450A (en) * | 2013-06-13 | 2013-09-25 | 华南理工大学 | Intensive-calculating GPS receiver based on mobile communication network and positioning method of same |
| CN103344976A (en) * | 2013-07-05 | 2013-10-09 | 东莞市泰斗微电子科技有限公司 | Auxiliary satellite navigation and positioning method and corresponding positioning terminal |
| CN103616701A (en) * | 2013-10-25 | 2014-03-05 | 湘潭力博电气技术有限公司 | A micro remote wild animal tracker and a control method thereof |
| CN103617475A (en) * | 2013-10-25 | 2014-03-05 | 湘潭力博电气技术有限公司 | A system and a method of energy efficiency management used for a micro remote tracker |
| CN104570022A (en) * | 2014-12-26 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | DSP-based multi-system compatible GNSS receiver and receiving system thereof |
| CN104796982A (en) * | 2015-03-19 | 2015-07-22 | 天津七一二通信广播有限公司 | Method for increasing positioning precision of PDT terminal |
| CN106556853A (en) * | 2015-09-28 | 2017-04-05 | 大唐半导体设计有限公司 | A kind of multimode Differential positioning method and system |
| CN108885268A (en) * | 2016-04-14 | 2018-11-23 | 高通股份有限公司 | Method for enhancing independent Global Navigation Satellite System (GNSS) performance |
| CN205643716U (en) * | 2016-05-14 | 2016-10-12 | 四川中卫北斗科技有限公司 | Navigation signal reception machine |
| CN106199666A (en) * | 2016-09-20 | 2016-12-07 | 北京航空航天大学 | A kind of positioning and tracing method forwarding GNSS signal based on terminal |
| CN108089216A (en) * | 2016-11-21 | 2018-05-29 | 千寻位置网络有限公司 | Assisted location method and system |
| CN106707317A (en) * | 2016-12-01 | 2017-05-24 | 上海埃威航空电子有限公司 | Regional position differential positioning method and system |
| CN107329153A (en) * | 2017-05-14 | 2017-11-07 | 上海美迪索科电子科技有限公司 | A kind of multimodality fusion positioner based on LoRa |
| CN206930782U (en) * | 2017-08-01 | 2018-01-26 | 云南电网有限责任公司瑞丽供电局 | A kind of Big Dipper positioning longitude and latitude optimization system based on CORS base stations |
| CN109959948A (en) * | 2017-12-22 | 2019-07-02 | 中兴通讯股份有限公司 | Acquisition methods, terminal, storage medium, the electronic device of location information |
| CN108008432A (en) * | 2018-01-05 | 2018-05-08 | 深圳市沃特沃德股份有限公司 | satellite positioning method, device and intelligent watch |
| CN111522045A (en) * | 2019-02-02 | 2020-08-11 | 中兴通讯股份有限公司 | GPS module cold start method and device of terminal, terminal and storage medium |
| CN110677828A (en) * | 2019-09-30 | 2020-01-10 | 东北大学 | Wireless communication networking and positioning method special for construction site of constructional engineering |
| CN110702118A (en) * | 2019-10-25 | 2020-01-17 | 桂林电子科技大学 | AGV-based outdoor positioning navigation system and positioning method thereof |
| CN111123329A (en) * | 2019-12-31 | 2020-05-08 | 南京泰通科技股份有限公司 | Communication auxiliary positioning device and positioning method based on Beidou satellite positioning system |
| CN111175798A (en) * | 2019-12-31 | 2020-05-19 | 南京泰通科技股份有限公司 | Terminal communication auxiliary positioning logic control method based on Beidou satellite positioning system |
| CN111475209A (en) * | 2020-03-16 | 2020-07-31 | 西安广和通无线软件有限公司 | Data processing method, data processing device, computer equipment and storage medium |
| CN112491461A (en) * | 2020-11-24 | 2021-03-12 | 重庆两江卫星移动通信有限公司 | CORS network data transmission system and method for low earth orbit satellite communication |
| CN112366337A (en) * | 2020-12-04 | 2021-02-12 | 上海燃锐新能源汽车技术有限公司 | Starting method and device of fuel cell engine system in low-temperature environment |
| CN112612038A (en) * | 2020-12-31 | 2021-04-06 | 杭州飞舸科技有限公司 | Low-power consumption GPS positioning method and system |
Non-Patent Citations (5)
| Title |
|---|
| 史小坤: "基于北斗高精度定位的工务现场作业全过程安全监测系统研究", 《安全专项研究》, vol. 40, no. 7, pages 38 - 42 * |
| 张中等: "基于NB-IoT的儿童防丢系统的设计", 《计算机与现代化》, no. 2, pages 30 - 33 * |
| 张钦娟: "车载导航定位技术与测试方法", 《电信网技术》, no. 6, pages 20 - 25 * |
| 王再超: "基于北斗定位于LoRa通信的车辆监控系统设计", 《中国优秀硕士学位论文全文数据库》, no. 7, pages 034 - 353 * |
| 王晗: "网络辅助北斗平台设计与性能评估研究", 《电信网技术》, no. 10, pages 12 - 16 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338911A (en) * | 2021-12-14 | 2022-04-12 | 青岛海信移动通信技术股份有限公司 | Positioning method suitable for terminal equipment and terminal equipment |
| CN114338911B (en) * | 2021-12-14 | 2023-08-08 | 青岛海信移动通信技术有限公司 | Positioning method suitable for terminal equipment and terminal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112904372B (en) | 2024-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7567207B2 (en) | Wireless mobile terminal using sensors for controlling autonomous and assisted GPS modes | |
| CN101395491B (en) | Method for position determination with measurement stitching | |
| US7375682B1 (en) | Always-on satellite positioning receiver | |
| US20160370469A1 (en) | On-board unit and spoofing detecting method | |
| CN101517429B (en) | System and/or method for acquisition of GNSS signals | |
| CN102419443B (en) | Method and system for processing signal | |
| US6459405B1 (en) | Satellite-based location system employing knowledge-based sequential signal search strategy | |
| US20140002304A1 (en) | Method and apparatus for locating terminal device | |
| US20160370470A1 (en) | On-board unit and spoofing detecting method | |
| US20090264136A1 (en) | System and/or method for reducing initial position uncertainty in sps operation | |
| CN101365957A (en) | Global navigation satellite system | |
| CN104459746A (en) | Method, system and device for position determination with predicted ephemeris | |
| CN103852773A (en) | Positioning system based on cloud computing technology and positioning method | |
| US8462046B2 (en) | Managing the measurement of signals | |
| EP1903349A1 (en) | Mobile communication terminal for receiving position information service and method thereof | |
| CN103176197A (en) | Auxiliary Beidou satellite positioning system and positioning tracking terminal based on same | |
| CN102788987B (en) | A kind of A-GNSS aided positioning system | |
| US20120022779A1 (en) | Navigation receivers | |
| CN102788982A (en) | Assisted positioning-monitoring system | |
| CN101881818B (en) | Device and method for rapidly detecting feeble signals | |
| CN101446635B (en) | Super low-power-consumption low-cost GPS chip framework for mobile facility | |
| US7864108B2 (en) | Present position estimation method, positioning method, program, and mobile terminal | |
| CN112904372B (en) | Auxiliary satellite navigation system and positioning method thereof | |
| WO2010045210A1 (en) | Systems and methods for accessing data over a short-range data link to enhance the performance of a navigational unit | |
| KR101077553B1 (en) | Global navigation satellite apparatus and method using near field communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |